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Installation & Operation Manual
®
tekmarNet
2 House Control 403
Introduction
The House Control 403 is designed to operate as part of a
complete hydronic heating system with tekmarNet
thermostats. It can provide operation of two outdoor reset
water temperatures such as radiant floor heating on the first
temperature and baseboard or fan coil heating on the second
temperature. In addition the control has Domestic Hot Water
and Setpoint capabilities. It is easy to add more zones, add
schedules or other convenient accessories through the use
®
of the tekmarNet
4 (tN4) Expansion terminals.
VIEW
Calls
Boil Exp Boil System
Menu
House Control 403
Pumps
Zones
1 2 3 4
Item
®
2 (tN2)
Features
•
Single on-off, two-stage or modulating boiler
•
Boiler outdoor reset temperature
•
Mixing outdoor reset temperature
•
Domestic Hot Water tank operation
•
Setpoint operation
•
Mix with variable speed injection, floating action,
or proportional 0-10 V (dc), proportional 4-20 mA
•
For use with tekmarNet
•
Four 115 V (ac) powered zone pump outputs
•
Expand to 24 zones per temperature using
tekmarNet
•
CSA C US Certified for use in USA and Canada
Benefi ts
•
Energy efficiency through Outdoor Temperature
Reset with Indoor Feedback
•
Indoor Feedback minimizes the water temperature
(increasing energy savings), and the efficiency of
your mechanical equipment through integrated
tekmarNet
•
Zone Synchronization reduces equipment cycling
•
Auto Differential - Reduces boiler cycling
•
Compact enclosure for flexible installation
•
Simple zone expansion using Wiring Centers
1 of 32
HVAC Systems Replaces: 09/10
®
2 Thermostats
®
4 expansion ports
®
Thermostats
© 2011
D 403
07/11
D 403 - 07/11
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Summary of Contents for Tekmar 403
- Page 1 2 House Control 403 HVAC Systems Replaces: 09/10 Introduction The House Control 403 is designed to operate as part of a complete hydronic heating system with tekmarNet ® 2 (tN2) thermostats. It can provide operation of two outdoor reset...
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Page 2: Table Of Contents
-- -- -- ---- ---- ----- ----- --- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - • tekmar or jeweller screwdriver • Needle-nose Pliers • Phillips head screwdriver • Wire Stripper © 2011 D 403 - 07/11 2 of 32... -
Page 3: Physical Dimensions
----------- --------- -- -- - - - - - - - - - -- -- -- -- --- -- -- -- -- -- --- -- -- -- -- -- --- -- -- -- -- --- -- • (2) #10 x 1” Wood Screws • tekmar 009K (24 V (ac) transformer with 4” x 4” junction box) • (5) Wire Nuts •... -
Page 4: Sizing The Transformer
Sizing the Transformer The control requires an external transformer with 20 VA capacity or greater. A tekmar Transformer 009 (or 009K which includes a 4” x 4” electrical box) can supply up to 40 VA, and includes an in-line fuse to protect the transformer and control. - Page 5 ------- -- - - - - - - - - -- -- -- -- --- -- -- -- -- -- --- -- -- -- -- -- --- -- -- -- -- -- -- - Back of House Control 403 (black)
- Page 6 C terminals. This is a powered output (24 V (ac)). on the external Wiring Center. • Wire the Opn, Cls, and C terminals on the 403 to the Mix Exp. open, close, and C terminals on the floating action The 403 has the capacity to expand the number of mixing actuator.
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Page 7: Sensor Wiring
Sensor with rear Sensor with bottom Sensor mounted entry wiring entry wiring onto 2" x 4" electrical box 7 of 32 © 2011 D 403 - 07/11... - Page 8 Universal the enclosure. The other side of the terminal block is used Cable Tie Sensor to connect wires from the control. © 2011 D 403 - 07/11 8 of 32...
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Page 9: Testing The Sensor Wiring
If the control display does not turn on, check the Input If a fault is suspected, contact your tekmar sales Power wiring terminals using an electrical multimeter. representative for assistance. -
Page 10: Max Heat
To Cancel Max Heat, go to Max Heat in the Toolbox menu run to maintain a target of Boil Design + 10°F (+ 6°C). and use the down arrow to select ‘Off’. (One can purge the system using this test and leave © 2011 D 403 - 07/11 10 of 32... -
Page 11: Applications
Single Boiler, DHW Tank, Variable Speed Mixing, 4 Mix Zones A403-1 Description: The House Control 403 operates an On/Off boiler with indirect Domestic Hot Water. Mixing is performed with variable speed injection, which supplies an outdoor reset water temperature to the 4 onboard mix temperature hydronic zones. - Page 12 Single Boiler, 4 Boiler Zones, DHW, 3 Way Mix, 4 Mix Zones A403-2 Description: The House Control 403 operates a modulating boiler with indirect Domestic Hot Water. Mixing is performed with a three-way floating action mixing valve, which supplies a reset water temperature to four mix temperature hydronic zones.
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Page 13: User Interface
See the Energy Saving Features section. is opening or closing. WWSD MIN / MAX WWSD Displays when the system is in Warm Displays when an operating temperature Weather Shut Down. reaches a minimum or maximum value. 13 of 32 © 2011 D 403 - 07/11... -
Page 14: Navigating The Display
The 403 is shipped pre-programmed with common settings. To change to the ‘Installer’ access level and Unlock the The 403 has an ‘Installer’ access level that allows full access thermostats: to all settings and a ‘User’ access level that restricts the •... -
Page 15: View Menu
Setpoint calls are still responded to. Use the User Switch to change scene out of Away. After the last item, the control returns to the first item in the menu. 15 of 32 © 2011 D 403 - 07/11... -
Page 16: Adjust Menu
ADJUST operate from fully closed to fully open. 30 to 230 seconds Installer tekmar actuating motors = 105 sec. Default = 105 seconds Refer to actuating motor for correct setting. Note: This item is only available when the Mix Type is set to FLOT (floating action motor), 0-10, or 4-20. - Page 17 Off or On Installer to heat the building. When On, the control ensures Default = Off that each zone is operated at least once daily to prevent stagnation. Continued on next page. 17 of 32 © 2011 D 403 - 07/11...
- Page 18 Setpoint Call is present. (82.0°C) ADJUST UNITS °F or °C Installer Default = °F User Selects units for temperature display. After the last item, the control returns to the first item in the menu. © 2011 D 403 - 07/11 18 of 32...
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Page 19: Monitor Menu
Press and hold the Up and Down buttons while viewing to reset. Not available when Boiler Type is EMS1 or EMS2. After the last item, the control returns to the first item in the menu. 19 of 32 © 2011 D 403 - 07/11... -
Page 20: Toolbox Menu
Will clear after 30 days, or press Up and Down buttons Guide for 1 second to manually clear. The last 5 history items will display if present. After the last item, the control returns to the first item in the menu. © 2011 D 403 - 07/11 20 of 32... -
Page 21: Sequence Of Operation
Note: The mixing device does not provide boiler minimum protection when the Boiler Type setting is EMS1 or EMS2. 21 of 32 © 2011 D 403 - 07/11... -
Page 22: Boiler Temperature Reset Operation
“MIN” segment is turned the boiler so that the boiler supply temperature will never on in the display when viewing either the boiler supply exceed 210°F (99.0°C). temperature or the boiler target temperature. © 2011 D 403 - 07/11 22 of 32... -
Page 23: Domestic Hot Water Tank Operation
® are shut off through tekmarNet communication to achieve DHW priority. It is assumed that the DHW pump will provide adequate Boiler Pump flow through the heat exchanger and the boiler. 23 of 32 © 2011 D 403 - 07/11... - Page 24 DHW tank. The control continues this purge for a maximum of two minutes. The control also stops the purge if the boiler supply temperature drops below the current boiler target temperature. Decreasing Outdoor Air Temperature © 2011 D 403 - 07/11 24 of 32...
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Page 25: Setpoint Operation
Off in the Setpoint control. Boiler Operation Section F The 403 is able to operate a single 1-stage or 2-stage on- The control displays the temperature that it is currently off boiler or a single modulating boiler as a heat source. - Page 26 EMS Signal Operation then allow the boiler to modulate down to the minimum The 403 can provide a 0-10 V (dc) signal proportional to modulation setting and hold it there for the Modulation Delay the boiler target which is compatible with tekmar Boiler time setting.
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Page 27: Domestic Hot Water Heat Source
Domestic Hot Water Heat Source Section G The 403 can use a high-efficiency water heater as a source of heat for space heating zones in addition to providing domestic hot water. This is an open-loop system in which potable water is circulated through the zones. -
Page 28: Energy Saving Features
‘Away’ button and tell the shut off and the zone continues to operate together with the House Control 403 to ignore DHW Calls, preventing the boiler system pump and / or mix system pump. This purges DHW tank from unnecessarily heating up when no one is the residual heat from the boiler into this zone. -
Page 29: Error Messages
(thermostat, setpoint control, timer) has an address. The device with this address on the boiler water temperature is no longer reporting back to the 403. The device can be located by either the address, or by going to each device in the building, ®... -
Page 30: Frequently Asked Questions
Warning symbol. Once the error on the device is corrected, the error message will clear. MIX MODULE ERROR A Mixing Module has been connected to the Mix Exp. tN4 terminals. The 403 controls mixing devices through outputs on the control and cannot operate tekmarNet ®... -
Page 31: Job Record
MIX DESIGN WWSD OCCUPIED MIX TYPE WWSD UNOCCUPIED MIX MOTOR DHW MODE BOILER TYPE DHW EXCHANGE BOILER DESIGN DHW OCCUPIED BOILER MINIMUM DHW UNOCCUPIED BOILER MOTOR SETPOINT MINIMUM MODULATION UNITS MODULATION DELAY 31 of 32 © 2011 D 403 - 07/11... -
Page 32: Technical Data
Representative. tekmar Control Systems Ltd., Canada, tekmar Control Systems, Inc., U.S.A. Head Offi ce: 5100 Silver Star Road, Vernon, B.C. Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650 Web Site: www.tekmarcontrols.com Product design, software and literature are Copyright ©...